I'm afraid my easiest mixed drink usually turns heads and I get lots of horrified looks. It's one my dad taught me.
It's tomatoe juice, V8 or Clamato (whichever you prefer, I'm partial to Clamato) poured into a tall glass of ice cold beer. It's awesome.
One that's not so easy to make but my #1 favorite is a VERY mildly dirty Grey Goose martini, straight up with a couple of jumbo gorganzola stuffed olives.